This is a well made overflow which appears to be good quality acrylic but uses sponges to restrict flow. My tank almost flooded several times because it filled up faster than it could drain and the bulkheads were leaking too. I didn't realize it until it was all together and I couldn't reach it without ripping off the whole tank so I filled it with silicone and a ton of silicone until it stopped leaking. I just hope and pray it will hold the siphon and not break the siphon especially when I'm not at home, there is no pump or anything to keep air pockets out, overall it's a good overflow but I don't think so it's worth $80, it's a bit much for a simple overflow for water.
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